一(ひと)つ一(ひと)つ

Emphasizes treating items individually rather than as a group. Conveys care, thoroughness, or deliberate attention to each element. Often used when someone wants to stress the importance of not rushing or skipping over details.

Common collocations

• 一(ひと)つ一(ひと)つ確認(かくにん)する: to check each one
• 一(ひと)つ一(ひと)つ丁寧(ていねい)に: carefully, one at a time
• 一(ひと)つ一(ひと)つの作業(さぎょう): each task
• 一(ひと)つ一(ひと)つ片付(かたづ)ける: to deal with things one by one

Similar words

• 一(いち)つずつ: one at a time — more neutral and less emphatic than 一(ひと)つ一(ひと)つ
• それぞれ: each; respectively — focuses on individual differences rather than sequential attention
• 個別(こべつ)に: individually — more formal and often used in business or official contexts

Related patterns

• The reduplication pattern extends to other counters: 一人一人(ひとりひとり) (each person), 一歩一歩(いっぽいっぽ) (step by step), 一日一日(いちにちいちにち) (day by day)